Ferromagnetic (FM) microstructures in the FM metallic phase of La0.825Sr0.175MnO3 were examined by means of Lorentz transmission electron microscopy (Lorentz TEM) and small-angle electron diffraction (SAED). Microstructures of FM domains depend strongly on the crystal structures. The structural phase transition at 185 K accompanies with a drastic change of 180 degree FM domain structures from macroscopic wide domains to striped narrow domains. Lorentz TEM and SAED experiments revealed that a distribution of the magnetization in the striped FM domains is non-uniform and locally fluctuated.
REFERENCES
1.
Colossal Magnetoresistive Oxides
, edited by Y.
Tokura
(Gordon and Breach
, Amsterdam
, 2000
).2.
E.
Dagotto
, Science
309
, 257
(2005
).3.
A.
Urushibara
et al, Phys. Rev. B
51
, 14103
(1995
).4.
Y.
Tokura
, Rep. Prog. Phys.
69
, 797
(2006
).5.
S.
Mori
, T.
Asaka
, and Y.
Matsui
, J. Electron Microscopy
51
, 225
(2002
).6.
M.
Konoto
et al, Appl. Phys. Lett.
84
, 2361
(2004
).7.
T.
Asaka
, T.
Kimura
, T.
Nagai
, X. Z.
Yu
, K.
Kimoto
, Y.
Tokura
, and Y.
Matsui
, Phys. Rev. Lett.
95
, 227204
(2005
).8.
D. I.
Golosov
, Phys. Rev. B
67
, 064404
(2003
).9.
R. H.
Wade
and J.
Silcox
, Phys. Status Solidi
19
, 63
(1967
).10.
R. H.
Wade
, Phys. Status Solidi
19
, 847
(1967
).11.
J. N.
Chapman
, Philos. Mag.
32
, 541
(1975
).12.
M. J.
Goringe
and J. P.
Jakubovics
, Philos. Mag.
15
, 393
(1967
).13.
P. J.
Grundy
and R. S.
Tebble
, Adv. Phys.
17
, 153
(1968
).© 2012 American Institute of Physics.
2012
American Institute of Physics
You do not currently have access to this content.